DE1930432C3 - Ash removal device for steam boiler firing - Google Patents

Description

The invention relates to a device for ash removal from steam boiler systems with an Kcs Combustion chamber pipe system hanging from a silk ceiling, with one working under water in a movable trough * 5 tend discharge device and a shaft connected to the ash funnel, which is used for sealing protrudes into the water of the trough.

It is known (German patent specification 463 083). in the case of an ashes immersed in a water bath 5 " funnel to make the water trough movable in order to move it to repair the discharge device and to close the ash funnel with a flap. As it is used for repair work or When replacing the entire water trough while the furnace is in operation, it depends on the Interrupting ash removal for as short a time as possible is a costly means of raising and lowering of the water trough required to be attached to the boiler roof in the case of steam boiler firing with high output The suspended combustion chamber pipe system elevates the sloping water trough during operation And lower it quickly and safely prior to the procedure.

The invention has for its object to improve the arrangements for moving the water tray ⁶ for the S rapid exchange or a short-term repair of the discharge device.

This task is performed by a device for ash removal of steam boiler firing according to the invention solved in that the shaft in itself is formed in a known manner telescope-like, the displaceable lower part of the shaft at its Outside is provided with a water cup, in which one on the outside of the upper, fixed Shaft part arranged sealing skirt protrudes, and on the displaceable shaft part a lifting device engages

After a further measure, the water cup with jet nozzles is on the base of the cup and one inward-facing overflow.

In practice, it has been found to be expedient to use the one acting on the displaceable shaft part Lifting device either against the slag funnel or against the consoles of the water trough to support.

It is also advantageous to have a closure plate on a holding device attached to the side of the water trough - the free end of the shaft when the water trough is moved misses. This ensures perfect sealing of the manhole during operation.

Since according to the invention only the low load of the lower shaft part must be raised or lowered. may as a result of the considerable reduction of the load to be lifted and lowered, the effort for the lifting and lowering device is also significant be decreased.

The lifting device is on to lift the lower part of the shaft over the edge of the water trough attached to the bottom of the combustion chamber. The lifting must be done so far that between the upper The edge of the water trough and the lower edge of the lower part of the manhole there is a sufficient distance, in order to be able to insert a plate when moving the water trough, through which the ash funnel is locked.

If the lifting and lowering device is supported on the water trough, then in the event of a fault in operation the lower part of the shaft lowered so far into the water trough that there is a sufficient distance between the upper fixed and the lower movable part of the shaft arises to also in this case to be able to insert a plate through which the ash funnel is closed.

Since no ash falls into the water cup, it is emptied in order to carry out the precautions. Through this the lifting and lowering device is simplified with respect to the parallel guidance of the lower shaft part The water trough is only moved horizontally from its operating position, a tilt of the water trough is therefore certainly avoided. This is how it becomes with high performance steam boiler firing Spilling over of hot water over the edge of the trough and thus a hazard for the operating personnel avoided.

To supply the cup with water, jet nozzles can be installed at the base of the water cup and a cup overflow be arranged on the inner wall of the lower shaft part. This will, if necessary Slag particles rinsed out of the water cup. Due to the water film that forms on the inner wall of the lower part of the manhole, the sticking of slag and thus mobility is prevented the lower shaft part secured against the upper shaft part.

3 ⁴

α- nirht apron 7 of the upper

The shutter plate for the ash hopper may be provided, in which the ¹ ^ _{"in the} possible eintaucnt on one side attached to the water tray holding shaft part 5. B sealing and c, resting device. The plate wir.i before immersion depth α ^Zatz 7 ⁱ ? ^l f ^(\ Rohrsvstems and to the method of the water tray eh piece under the Dehmmgsausgleicn a J _"10 ^J _{on the thickness} j lower or upper column portion is pushed and 5 inserting a ^Ver ^ ^cn J ~~ £ _{5; st} i _m cross section fully sufficient in the process of the trough below the chute. the ^ '^ ιπ -bewegt _{this eingesc} h _0. when entering the water tray it is smaller than the Scnacntieii ■ * shaft part 4 to

removed again. This will be the time for complete practice. Without the mobility Ά κει ^ _water cup before closing the ash funnel shortened when it is emptied. *, .. _b ' _cn innt. At the exchange of a water trough only a falling slag a S ^ _eme jj _e b _e _ _{accumulates and} a lot of ash accumulates in the combustion chamber. ren part 4 of the ^ i ¹ ^ ,, ^g ; _{t of the} part 4 in the

Two Ausfüh.-ungsbeispiele of the invention ir. 13 lowering device IJ to the drawing _is shown _oebracht and 13 will be described in more detail in the following kvorrichtung respectively desired ^{Ho "mc} ^ Λ _Sen. It shows After F i g. 1 is ^{d 'e H} ^ ' _chamber attached and

F i e. 1 the ash removal device in the vertical 15 on the underside aer di _lower part 4 of the

Cross-section, with the lifting and lowering device holding in stretched ^ ^ustan ° _Feu erung when Anan is attached to the underside of the combustion chamber and shaft in the ^Betn * ^DS . ^l * <_'wa rms boiler, the lower part of the shaft emerges warm themselves in the normal loading of the boiler. At " ^Cl . _{D water} the drive position is located, the part 4 um em Sw * £ ω £ ^ ^ _{the water} .

Fig. 2 the ash removal device according to Fig. 1. ^ trough 2 a. The Dichmn «s ^ ^ ^" ^ ^ where the lower part of the shaft to the process cup 6 is raised by jet nozzles β _lower Schachides water trough, overflow 9 on the inner wall

F i g. 3 the ash removal device in the vertical part 4 is directed. Precautions for

Cross-section, with the lifting and lowering device. Fig. 2 shows aais ui <-. . _{By J A} h _ge leads

tion is supported on the water trough. »5 drive the trough L in ™ _T. , ₄ drive the shaft

With 1 the ash funnel has become a steam boiler by the by _v . _{h 13 over the} firing of great power with on the boiler roof through, the lifting and sen ^ ^ _{£ ine ver}

hanging combustion chamber pipe system. Edge of the trough. . = ^EnoDt -fräsvorrichtung 11. Below the ash hopper 1 is the schlußplaite on wheels 10 cherishes ζύ te.n ^ ^ 2. In the 30 the rog _{of piaue 1Q} horizontally movable water trough at the 1 - D ^ei "" fc ■ _aagerech te VerTrog. 2 there is a fixed pin arbei- under water limits their ν b ^ _ _Schycht tend Austragvomchtung 3, the od pushability due to wear by ^ ^ ng ^^ _{dn Ab.} by clamping of slag parts. like. interfering part 4. ^ P ^f is vulnerable e, "J ™" ¹ ^ _her falling ash. The lower TeU 4 of the shaft protrudes to the. tilt the plateau 10 through _{this vine} . _and

Sealing and expansion compensation of the pipe 35 Fig. 3 shows α ic 1 _{w sserlro!} , 2 discharge system into the water of the trough 2. Around the fire lowering device 13 ^a « ¹ £" _{pipe system there} is an operation in the event of a fault in the discharge devices. The Deh ^ ^un B ^sa "^ _c ^ _S e 6 'do! To be able to continue, it is necessary in this case, r.der ^ water .se ^

either as quickly as possible the water trough 2 in the arrow To miss the trough V ₄ . _{n dcp}

direction ^ to move, to remedy the fault and 4 ° not shown l) the unure ^^ ^^ ^ to bring it back into the normal operating position Trough. 2 as far as £ * ™ \ i> of the lower edge of the water trough or trough 2 in the direction of the arrow A to yer- Schach e es 4 «^ rtaiD _h , _{uss becomes in}

drive and at the same time through a water trough 2 to SJachteile 5 st A ^. ^ ^ ^ ^

^REPLACE - Part 4 is pushed under the shaft part 5 with a water cup 6, 6 '<5 IcSueil 4.

1 sheet of drawings

Claims (4)

Patent claims: 1. Device for ash removal from steam boiler systems with a hanging from the boiler ceiling Combustion chamber pipe system, with one working under water in a movable trough Discharge device and a shaft connected to the ash funnel, which is used for sealing protrudes into the water of the trough, »° characterized in that the Shaft is designed in a known manner like a telescope, the displaceable lower Part (4) of the shaft on its outside mil a water cup (6, ö ') is provided, in which one on the outside of the upper, fixed Shaft part (5) arranged sealing skirt (T) protrudes, and on the movable shaft part (4) a lifting device (13, 130 engages. 2. Device according to claim 1, characterized in that that the water cup (6, 60 jet nozzles (8) at the bottom of the cup and an inwardly directed overflow (9). 3. Device according to claim 1, characterized in that the on the displaceable Lifting device (13, 13 ') engaging the shaft part (4) either against the slag hopper (1) (Fig. 1. 2) or against consoles of the water trough '. (2) (Fig. 3) absliim. 4. Device according to claims 1 to 3. characterized in that on a holding device attached to the side of the water trough (2) (11) a closure plate (10) rests on the free shaft end when the water trough is moved locks.